TY - JOUR
T1 - A versatile nanocomposite made of Cd/Cu, chlorophyll and PVA matrix utilized for photocatalytic degradation of the hazardous chemicals and pathogens for wastewater treatment
AU - Soltaninejad, Vahhab
AU - Ahghari, Mohammad Reza
AU - Taheri-Ledari, Reza
AU - Maleki, Ali
AU - Shalan, Ahmed Esmail
N1 - Publisher Copyright:
© 2022
PY - 2022/5/15
Y1 - 2022/5/15
N2 - In this work, a novel composition of cadmium sulfide (CdS), copper(II) hydroxide (Cu(OH)2), copper(II) oxide nanoparticles, and chlorophyll (Chl) is prepared based on polyvinyl alcohol (PVA) matrix. The characterization of the CdS/Cu(OH)2/CuO@PVA-Chl nanocomposite has been carried out by the various analytical methods. Then, the prepared CdS/Cu(OH)2/CuO@PVA-Chl is then applied as a very efficient photocatalyst for degradation of the hazardous dyes such as methylene blue (MB), Congo red (CR), and 4-chlorophenol (4-CP) in the aqueous samples. For the preparation of the intended nanocomposite, the Chl has been extracted from fresh spinach via a convenient mechanical adsorption/desorption method. In the obtained optimum conditions, a great degradation efficiency (ca. 97.6%) for the MB dye achieved by simultaneous application of the prepared CdS/Cu(OH)2/CuO@PVA-Chl photocatalyst and the visible-light (LED 70 W, λ = 425 nm), over a 60 min contact time. Moreover, the degradation efficiency of the CR and 4-CP dyes were ca. 92% and 88%, respectively. The reusability investigations have revealed that no significant loss in the catalytic performance is occurred over seven times recycles. As well, degradation of the pathogens by the CdS/Cu(OH)2/CuO@PVA-Chl nanocomposite has been screened under the obtained optimal conditions. Briefly, the diameter of the inhibition zones by the prepared composite film has been evaluated to be ca. 11.0 (± 0.1) and 9.0 (± 0.1) mm for S. aureus and E. coli bacterial cells, respectively.
AB - In this work, a novel composition of cadmium sulfide (CdS), copper(II) hydroxide (Cu(OH)2), copper(II) oxide nanoparticles, and chlorophyll (Chl) is prepared based on polyvinyl alcohol (PVA) matrix. The characterization of the CdS/Cu(OH)2/CuO@PVA-Chl nanocomposite has been carried out by the various analytical methods. Then, the prepared CdS/Cu(OH)2/CuO@PVA-Chl is then applied as a very efficient photocatalyst for degradation of the hazardous dyes such as methylene blue (MB), Congo red (CR), and 4-chlorophenol (4-CP) in the aqueous samples. For the preparation of the intended nanocomposite, the Chl has been extracted from fresh spinach via a convenient mechanical adsorption/desorption method. In the obtained optimum conditions, a great degradation efficiency (ca. 97.6%) for the MB dye achieved by simultaneous application of the prepared CdS/Cu(OH)2/CuO@PVA-Chl photocatalyst and the visible-light (LED 70 W, λ = 425 nm), over a 60 min contact time. Moreover, the degradation efficiency of the CR and 4-CP dyes were ca. 92% and 88%, respectively. The reusability investigations have revealed that no significant loss in the catalytic performance is occurred over seven times recycles. As well, degradation of the pathogens by the CdS/Cu(OH)2/CuO@PVA-Chl nanocomposite has been screened under the obtained optimal conditions. Briefly, the diameter of the inhibition zones by the prepared composite film has been evaluated to be ca. 11.0 (± 0.1) and 9.0 (± 0.1) mm for S. aureus and E. coli bacterial cells, respectively.
KW - Antibacterial activity
KW - Chlorophyll
KW - Degradation, Methylene blue
KW - Photocatalyst
UR - https://www.scopus.com/pages/publications/85123928638
U2 - 10.1016/j.molstruc.2022.132456
DO - 10.1016/j.molstruc.2022.132456
M3 - Article
AN - SCOPUS:85123928638
SN - 0022-2860
VL - 1256
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
M1 - 132456
ER -
